Watch.



L. E. F. WACHTER.

WATCH.

APPLICATION FILED 05c. 14. I915.

Patented Dec. 31, 1918.

LOUIS E. F. WACHTEB, OF NEW YORK, N. Y.

WATCH.

Specification of Letters Patent.

Patented Dec. 31, 1918.

Application filed December 14, 1915. Serial No. 66,675.

To all whom it may concern:

Be it known that I, LOUIS E. F. WACHTER, a citizen of the United States,and a resident of New York city, county and State of New York, haveinvented certain new and useful Improvements in Watches, of which thefollowing is a specification, reference being had to the drawings hereinreferred to which are made a part hereof.

This invention relates to watches and more particularly a means forsecuring the socalled crystal to the case. In particular, among theobjects of the invention is to efiect a more perfect closure, and alsoto make possible a water-proof case, that is, to prevent ingress ofmoisture or water, or other foreign matter through the joints betweenthe crystal and the case. By crystals is to be understood the so-calledcrystal usually consisting of glass, or any other suitable material forthe transparent covering of the face of the watch.

The particular embodiments of my invention herein referred to I haveshown in the construction.

accompanying drawings, in which:

Figure 1 is a side view of a watch.

Fig. 2 is a side View of a crystal and part of bezel in verticalsection.

Fig. 3 is a transverse section of bezel and crystal of a watch inhorizontal position.

Fig. "4 is a view in section of a modified d Fig. 5 is a view in sectionof a modified construction.

The watch case center A has a crystal B,

which is secured to the bezel G. In the form shown in Fig. 2, the bezelhas on its inner rim bifurcated edges adapted to contain material .D,which may be rubber or cement, or

other suitable material which will receive.

the edge of the crystal and seal the joint so as to form a water-proof,moisture-proof or dust-proof connection between the crystal and thebezel.

- In Fig. 3, the crystal B engages by a snap groove with the bezel C,while on the inner side of the bezel an annular projection c is formed,which engages with an annular band G, fitting inside of the bezel andhaving one portion engaging the dial, While an arm of the band engagesthe inner surface of the thereby forming a seal on the inner surface ofthe crystal and a pocket is formed between the bezel projection c andthe band G, so that any foreign material accidentally passing throughthe snap connection between the crystal and the bezel, will be held inthe pocket and not permitted to pass further onto the dial or into theworks.

In Fig. 4 the bezel C" has an integral projection comprising a thin bandF having an annular groove as shown, which is of such dimension andshape as to form a suflicient spring so that when the edge of thecrystal B is snapped into the snap groove f, the inner surface of thecrystal will press against the inner edge of F, forming a sealing andtherebv prevent ingress of foreign matter.

In Fig. 5, the bezel 0" projects over the crystal engaging its outersurface, and thereby forming a flat contact, while the extreme edge ofthe crystal engages a band E, which has a groove 6, and this bandsetting on the surface of the dial and having a thickness spring-pressedcontact between the ring E and the crystal edge, and also a pressedcon-.

tact between the overlapping edge of the belzel C and the outer surfaceof the crysta It will be evident that my invention may be modified as todetails of dimensions and material, and still embody the spirit of myinvention. Changes in construction may be desirable when embodied onlarge or small time pieces. In all, the crystal may be secured orsnapped into the bezel, of my construction, in the usual Way, whenembodied in certain forms, or may be put in from the inside and thebezel snapped to the watch center on top of the crystal, to produce thedesired advantageous construction.

Without limiting myself to the precise form in which my invention isherein specifically shown and described, what I claim and desire tosecure by Letters Patent is:

In combination with a watch, a bezel rim having a bifurcation formingtwo flanges, a crystal having its edge engaged between said flanges, oneof said flan esengaging said bezel for engagement with the case thesurface of the crystal outsi e of the edge parts of a Watch. 10 and theother of said flan es overlapping Signed at New York, this 13th day ofand engaging the under sur ace of the crys- December 1915.

tal Within the edge, reinforced means on one LOUIS 'E. F. WACHTER.

of said flanges ermitting the formation of Witnesses:

a water-tight joint between the borderpf the DANIEL J. GUINAN, crystaland the flanges, an edge portlon on H. MUCHMORE.

